How to determine which edition of AIX is installed

IBM offers an AIX operating system in three editions:
Express
Standard
Enterprise

Type of edition can be discovered using this command:

/usr/sbin/chedition -l

Source:
AIX 6.1 Editions
chedition command reference

IBM Storage Provider v 1.1.0 for VMware and IBM XIV

IBM Storage Provider for VMware VASA, Version 1.1.0

For IBM Storage and VMware users, the IBM Storage Provider for VMware VASA (referred to as 'VASA Provider') improves VMware vSphere's ability to monitor and automate storage related operations. The VASA Provider is a standard vSphere management plug-in that is deployed once on each vCenter server to interact with vSphere APIs for Storage Awareness (VASA). This tool is used to manage storage from vCenter server.

How to setup SSH in AIX to communicate with HMC

Download authorized_keys2 file from HMC
scp hscroot@HMC:/home/hscroot/.ssh/authorized_keys2 authorized_keys2_HMC

Add public key of your user on host:
cat ~/.ssh/id_rsa.pub >> authorized_keys2_HMC

Upload authorized_keys2_HMC file back to HMC
scp authorized_keys2_HMC hscroot@HMC:/home/hscroot/.ssh/authorized_keys2

SSH to HMC to add HMC to known hosts
ssh hscroot@HMC

TSM replacing damaged primary storage pool volume - tape

Failing tape can be replaced by different ways and I'll cover two of them:

If a tape can be read so you can issue move data command to move data from failing tape to another tape(s) in a same storage pool:
move data VOLUME

If a tape can not be read then it can be restored from backup storage pool.
For "how to" read more bellow:

AIX - foreground process to background and back

To place a foreground process in the background:
suspend the foreground process (with Ctrl-z) then enter the bg command to move the process into the background.

Show the status of all background and suspended jobs: jobs
Bring a job back into the foreground: fg %jobnumber
Bring a job back into the background: bg %jobnumber

How to Investigate a System Reboot of AIX

Successful logins on terminal to syslog on AIX

Problem description:
AIX sends just unsuccessful logins into syslog and successful logins like terminal login are missing (e.g. virtual console). For solution read more...